Bioinspired water-soluble two-photon fluorophores

Bioinspired water-soluble two-photon fluorophores

Author Rodrigues, Ana Clara Beltran Google Scholar
Mariz, Ines de Fatima Afonso Google Scholar
Macoas, Ermelinda Maria Sengo Google Scholar
Tonelli, Renata Rosito Autor UNIFESP Google Scholar
Martinho, Jose Manuel Gaspar Google Scholar
Quina, Frank Herbert Google Scholar
Bastos, Erick Leite Google Scholar
Abstract The structural modification of plant pigments allows the development of new functional dyes with tailored photophysical properties. Two-photon excitation fluorescence microscopy has emerged as an important technique, but requires the use of fluorophores having large two-photon absorption cross-sections in water. This feature is rarely found in natural or artificial dyes, but betalains, the main pigments of beetroots and some species of fluorescent flowers, can be modified to produce water-soluble two-photon fluorophores. Herein we describe the semisynthesis and photophysical characterization of two water-soluble artificial coumarinic betalains. The excitation of these compounds in the near-infrared results in yellow fluorescence with two-photon cross-sections in water of 323 GM and 179 GM.
Keywords Fluorescence
on absorption
Betalains Bioimaging
xmlui.dri2xhtml.METS-1.0.item-coverage Oxford
Language English
Sponsor Sao Paulo Research Foundation - FAPESP
Brazilian National Council for Scientific and Technological Development - CNPq
Coordination for the Improvement of Higher Education Personnel - CAPES
Foundation for Science and Technology - FCT
Grant number FAPESP: 2014/22136-4
FAPESP: 2016/21445-9
CNPq: D140676/2013-9
CAPES: BEX 5981/14.0
Date 2018
Published in Dyes And Pigments. Oxford, v. 150, p. 105-111, 2018.
ISSN 0143-7208 (Sherpa/Romeo, impact factor)
Publisher Elsevier Sci Ltd
Extent 105-111
Access rights Closed access
Type Article
Web of Science ID WOS:000427332200015

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